Tire tread and buttress



FIG. 1 is a perspective view of a tire tread and buttress showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is an enlarged fragmentary front elevational view thereof. 

The ornamental design for a tire tread and buttress, as shown and described. 